mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-09 04:56:01 +10:00
alteredq
81b60ea2f6
Noticeable difference: can't anymore assign Material references to faces directly - "face.materials" became "face.materialIndex". Materials have to go to "geometry.materials" array (to which "face.materialIndex" points). This is necessary to allow run-time changing of face materials (this indirection used to be done by arrays). Some casualties: - multi-materials example, this functionality isn't possible anymore - had to simplify LOD Text examples as LODs don't handle groups (used to fake multi-materials) - multi-materials sphere in materials example can't have faces with undefined materials (this may be fixable I guess, when there'll be some real use-case) - scene format still has materials arrays, only the last material will be used (except when there are face materials, then materials from JSON will be used, as before) Other renderers and their corresponding examples were not touched yet. WebGLRenderer still needs some prettification, some things don't make sense anymore without arrays, code can be cleaned up further.
220 lines
5.0 KiB
HTML
220 lines
5.0 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<title>three.js webgl - intersection: ray/mesh readinf normal</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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body {
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font-family: Monospace;
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background-color: #f0f0f0;
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margin: 0px;
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overflow: hidden;
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}
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#oldie { background-color: #ddd !important }
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#info {
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position: absolute;
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top: 30px; left: 10px; width: 800px;
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color: #000000;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: left;
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z-index:100;
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}
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#options {
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position: absolute;
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top: 10px; left: 10px; width: 800px;
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color: #000000;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: left;
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z-index:100;
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}
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</style>
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<script src="../build/Three.js"></script>
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<script src="js/RequestAnimationFrame.js"></script>
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<script src="js/Stats.js"></script>
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<script>
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var camera, scene, projector, renderer,
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info, mouse = { x: 0, y: 0 }, sun, loader, stats, line;
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var meshes = [];
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var theta = 0;
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var camdist = 500;
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var totalFaces = 0, totalColliders = 0;
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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info = document.getElementById("info");
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = camdist;
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loader = new THREE.JSONLoader( );
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scene = new THREE.Scene();
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projector = new THREE.Projector();
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renderer = new THREE.WebGLRenderer();
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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var ambientLight = new THREE.AmbientLight( 0x606060 );
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scene.add( ambientLight );
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sun = new THREE.DirectionalLight( 0xffffff );
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sun.position = camera.position.clone();
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scene.add( sun );
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loadCube();
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var lineMat = new THREE.LineBasicMaterial( { color: 0xff0000, opacity: 1, linewidth: 3 } );
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var geom = new THREE.Geometry();
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geom.vertices.push( new THREE.Vertex( new THREE.Vector3(-100, 0, 0) ) );
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geom.vertices.push( new THREE.Vertex( new THREE.Vector3( 100, 0, 0) ) );
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line = new THREE.Line(geom, lineMat);
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scene.add( line );
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stats = new Stats();
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stats.domElement.style.position = 'absolute';
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stats.domElement.style.top = '0px';
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container.appendChild( stats.domElement );
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container.onmousemove = onDocumentMouseMove;
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animate();
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}
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function loadCube( p ) {
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var onGeometry = function( geometry ) {
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var sx = 300;
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var sy = 240;
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var sz = 300;
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addCube( new THREE.Vector3( 0, 0, 0 ), geometry );
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};
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loader.load( { model: "obj/suzanne/suzanneHi.js", callback: onGeometry } );
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}
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function addCube( p, g) {
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totalFaces += g.faces.length;
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totalColliders++;
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var mesh = new THREE.Mesh( g, new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
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mesh.position = p;
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scene.add( mesh );
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var mc = THREE.CollisionUtils.MeshColliderWBox( mesh );
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THREE.Collisions.colliders.push( mc );
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meshes.push( mesh );
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};
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function onDocumentMouseMove( event ) {
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event.preventDefault();
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mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
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mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
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};
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function animate() {
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requestAnimationFrame( animate );
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var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
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projector.unprojectVector( vector, camera );
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var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
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if ( meshes.length == 0 ) return;
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var i, l = meshes.length;
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for ( i = 0; i < l; i ++ ) {
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meshes[ i ].material.color.setHex( 0x003300 );
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}
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info.innerHTML = "";
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var c = THREE.Collisions.rayCastNearest( ray );
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if( c ) {
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info.innerHTML += "Found @ normal " + vts( c.normal );
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var poi = ray.origin.clone().addSelf( ray.direction.clone().multiplyScalar(c.distance) );
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line.geometry.vertices[0].position = poi;
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line.geometry.vertices[1].position = poi.clone().addSelf(c.normal.multiplyScalar(100));
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line.geometry.__dirtyVertices = true;
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line.geometry.__dirtyElements = true;
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c.mesh.material.color.setHex( 0xbb0000 );
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} else {
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info.innerHTML += "No intersection";
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}
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camera.position.x = camdist * Math.cos( theta );
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camera.position.z = camdist * Math.sin( theta );
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camera.position.y = camdist/2 * Math.sin( theta * 2 );
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camera.lookAt( scene.position );
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sun.position.copy( camera.position );
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sun.position.normalize();
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theta += 0.005;
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renderer.render( scene, camera );
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stats.update();
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};
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function vts(v) {
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if(!v) return "undefined<br>";
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else return v.x.toFixed(2) + " , " + v.y.toFixed(2) + " , " + v.z.toFixed(2) + "<br>";
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};
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</script>
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</head>
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<body onload="init();">
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<div id="info"></div>
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<div id="options"></div>
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</body>
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</html>
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